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This story was originally published by Mother Jones and is reproduced here as part of the Climate Desk collaboration. A major two-week summit on climate change opened on Monday in Paris, and President Barack Obama was there to urge world leaders to push for a strong international agreement to slow global warming. In his speech (video above), the president also offered a rebuke to the terrorists behind the Nov. 13 attacks in the French capital that left 130 people dead. The summit, he said, is “an act of defiance that proves nothing will deter us from building the future we want for our children.” Obama acknowledged America’s unique responsibility for ensuring success at the talks, which are designed to produce an unprecedented agreement between nearly 200 nations to reduce greenhouse gas emissions and prepare for the impacts of climate change. It’s the first time nations h...